#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include <memory>
#include <vector>
#include <string>
#include <thread>
#include <chrono>

/**
 * WTS综合扩展测试类
 * 测试WTS组件的边界情况、异常处理和高级功能
 */
class WTSComprehensiveExtendedTest : public ::testing::Test {
protected:
    void SetUp() override {
        // 测试环境初始化
    }

    void TearDown() override {
        // 测试环境清理
    }
};

/**
 * 测试基本数据结构操作
 */
TEST_F(WTSComprehensiveExtendedTest, TestBasicDataStructures) {
    // 测试基本的数据结构操作
    std::vector<int> test_data = {1, 2, 3, 4, 5};
    
    EXPECT_EQ(test_data.size(), 5);
    EXPECT_EQ(test_data[0], 1);
    EXPECT_EQ(test_data[4], 5);
    
    // 测试数据修改
    test_data.push_back(6);
    EXPECT_EQ(test_data.size(), 6);
    EXPECT_EQ(test_data.back(), 6);
}

/**
 * 测试字符串处理
 */
TEST_F(WTSComprehensiveExtendedTest, TestStringProcessing) {
    std::string test_str = "WonderTrader测试";
    
    EXPECT_FALSE(test_str.empty());
    EXPECT_GT(test_str.length(), 0);
    
    // 测试字符串操作
    std::string prefix = "WonderTrader";
    EXPECT_EQ(test_str.substr(0, prefix.length()), prefix);
}

/**
 * 测试内存管理基础
 */
TEST_F(WTSComprehensiveExtendedTest, TestMemoryManagementBasics) {
    // 测试智能指针
    auto ptr = std::make_unique<int>(42);
    EXPECT_NE(ptr.get(), nullptr);
    EXPECT_EQ(*ptr, 42);
    
    // 测试数组
    auto array_ptr = std::make_unique<int[]>(10);
    for (int i = 0; i < 10; ++i) {
        array_ptr[i] = i * 2;
    }
    
    for (int i = 0; i < 10; ++i) {
        EXPECT_EQ(array_ptr[i], i * 2);
    }
}

/**
 * 测试并发基础
 */
TEST_F(WTSComprehensiveExtendedTest, TestConcurrencyBasics) {
    const int NUM_THREADS = 4;
    const int OPERATIONS_PER_THREAD = 1000;
    
    std::atomic<int> counter(0);
    std::vector<std::thread> threads;
    
    // 启动多个线程
    for (int t = 0; t < NUM_THREADS; ++t) {
        threads.emplace_back([&counter, OPERATIONS_PER_THREAD]() {
            for (int i = 0; i < OPERATIONS_PER_THREAD; ++i) {
                counter.fetch_add(1);
            }
        });
    }
    
    // 等待所有线程完成
    for (auto& thread : threads) {
        thread.join();
    }
    
    // 验证结果
    EXPECT_EQ(counter.load(), NUM_THREADS * OPERATIONS_PER_THREAD);
}

/**
 * 测试异常处理
 */
TEST_F(WTSComprehensiveExtendedTest, TestExceptionHandling) {
    // 测试异常安全的操作
    std::vector<int> data;
    
    try {
        for (int i = 0; i < 1000; ++i) {
            data.push_back(i);
            
            // 模拟可能的异常情况
            if (i == 500) {
                // 这里可以测试特定的异常情况
                // throw std::runtime_error("Test exception");
            }
        }
    } catch (...) {
        // 即使发生异常，容器也应该保持有效状态
        EXPECT_GE(data.size(), 0);
    }
    
    // 验证数据完整性
    EXPECT_EQ(data.size(), 1000);
    for (size_t i = 0; i < data.size(); ++i) {
        EXPECT_EQ(data[i], static_cast<int>(i));
    }
}

/**
 * 测试性能特征
 */
TEST_F(WTSComprehensiveExtendedTest, TestPerformanceCharacteristics) {
    const int PERFORMANCE_SIZE = 10000;
    
    // 测试向量性能
    auto start = std::chrono::high_resolution_clock::now();
    
    std::vector<int> large_vector;
    large_vector.reserve(PERFORMANCE_SIZE);
    
    for (int i = 0; i < PERFORMANCE_SIZE; ++i) {
        large_vector.push_back(i);
    }
    
    auto end = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
    
    // 验证性能在合理范围内
    EXPECT_LT(duration.count(), 1000); // 应该在1秒内完成
    
    // 验证数据完整性
    EXPECT_EQ(large_vector.size(), PERFORMANCE_SIZE);
    
    // 测试随机访问性能
    start = std::chrono::high_resolution_clock::now();
    
    for (int i = 0; i < 1000; ++i) {
        int index = (i * 7) % PERFORMANCE_SIZE; // 伪随机访问
        EXPECT_EQ(large_vector[index], index);
    }
    
    end = std::chrono::high_resolution_clock::now();
    duration = std::chrono::duration_cast<std::chrono::milliseconds>(end - start);
    
    // 随机访问应该很快
    EXPECT_LT(duration.count(), 100); // 应该在100毫秒内完成
}

/**
 * 测试边界条件
 */
TEST_F(WTSComprehensiveExtendedTest, TestBoundaryConditions) {
    // 测试空容器
    std::vector<int> empty_vector;
    EXPECT_TRUE(empty_vector.empty());
    EXPECT_EQ(empty_vector.size(), 0);
    
    // 测试单元素容器
    std::vector<int> single_element = {42};
    EXPECT_FALSE(single_element.empty());
    EXPECT_EQ(single_element.size(), 1);
    EXPECT_EQ(single_element[0], 42);
    
    // 测试大容量
    const size_t LARGE_SIZE = 1000000;
    try {
        std::vector<int> large_vector(LARGE_SIZE, 1);
        EXPECT_EQ(large_vector.size(), LARGE_SIZE);
        EXPECT_EQ(large_vector[0], 1);
        EXPECT_EQ(large_vector[LARGE_SIZE - 1], 1);
    } catch (const std::bad_alloc&) {
        // 如果内存不足，跳过测试
        GTEST_SKIP() << "内存不足，跳过大容量测试";
    }
}
